Air quality in our city is becoming worse andworse. – Yes. These days’ PM2.5 readingsare frightening. We must do something to _______ air pollution.

I like carrots very much. I often eat ________ for breakfast.

is reported in the newspapers, talksbetween the two countries are making progress.

How could you ______ my sister so easily in the crowd?— Because she stood out in her red dress.

There are ________ bears on the earth because they have ________ space on it.